When I was a little girl, I got teased for having big lips. Now, as a makeup artist, I'm constantly asked by women how they can make theirs look fuller. (Oh, how the tables have turned!) So I've come up with a simple way to create a plumper pout, whether your lips have lost volume over time, or, like Jazmin, the REDBOOK reader here, they've always been on the small side. "I've had thin lips my whole life, so I never saw the point in wearing lipstick," the New York City–based actress told me. We fixed that fast, and the results are understated and believable—which is most important.

Step 2: Define and shape with a nude lip pencil. Pick one that matches your lips' natural color and trace it along the outer edge of your lip lines. For extra oomph, draw a faint straight line from point to point on your Cupid's bow. Then put on a rosy, healthy-looking lipstick.

ARI MICHELSON

Step 3: Swipe on a shimmery gloss. Use a clear shade or a soft pink one that's similar to your lipstick—but don't apply it all over. Brush it down the center of your mouth only, on top and bottom lips, swishing side to side a little as you go. This subtle light reflection really boosts fullness.

ARI MICHELSON

Step 4: Apply concealer at the corners. Dab your regular concealer along the corners of your mouth, then pat to blend it in. This not only keeps your lipstick from bleeding into any fine lines—it also acts like a highlighter to bring out your lips even more.